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The quality of humic acid is affected by many factors, mainly from its source, processing process and storage conditions. Here are some of the main influencing factors:

Source of raw materials:

Soil type: The content and characteristics of humic acid in different soil types will vary.

Plant species: Different plant residues will lead to differences in the composition and quality of humic acid.

Microbial activity:

Microbial community: The type and number of microorganisms involved in the formation of humic acid will affect its quality.

Degradation rate: The rate of degradation of organic matter by microorganisms will also affect the formation and characteristics of humic acid.

Environmental conditions:

Temperature: Temperature changes will affect microbial activity and the decomposition rate of organic matter.

Humidity: Suitable humidity is conducive to microbial activity and the accumulation of humic acid.

Oxygen supply: Oxidizing or reducing environments will change the chemical properties of humic acid.

Chemical factors:

pH: The acidity and alkalinity of the soil or environment will affect the solubility and structure of humic acid.

Mineral content: Metal ions such as iron and aluminum may bind to humic acid, affecting its structure and availability.

Time factors:

Humification time: The length of time that organic matter is converted into humic acid affects the complexity of its structure.

Agricultural and industrial activities:

Fertilizer and pesticide use: Excessive fertilizers and pesticides may inhibit the formation of humic acid.

Pollutants: Industrial pollutants may affect the activity of soil microorganisms, thereby affecting the quality of humic acid.

Extraction and processing methods:

Extraction methods: Different physical and chemical methods (such as alkaline extraction, acid extraction) will affect the yield and purity of humic acid.

Processing conditions: Temperature, pressure, solvent and other conditions will also affect the texture of the extract.

Preservation conditions:

Storage environment: Temperature, humidity and light conditions will affect the stability and quality of humic acid.

Packaging materials: Improper packaging materials may lead to oxidation or degradation of humic acid.

By controlling and optimizing these factors, the quality and application effect of humic acid can be improved.